用流动等离子体和光电发射对绝缘和导电尘埃粒子充电
Charging of insulating and conducting dust grains by flowing plasma and photoemission
摘要：
本文用粒子网格法研究了具有定向光子流的超声速等离子体流中导电或交替绝缘尘埃粒子的带电。电子发射改变了颗粒上和周围等离子体中的表面电荷分布。研究了不同光子通量和不同入射光子与等离子体流速矢量夹角下尘埃颗粒表面和周围的电荷和电势分布。连续和脉冲辐射被认为是。我们表明，光电发射允许控制导电颗粒上的电荷，并讨论了固定和旋转绝缘颗粒的充电。带正电荷的颗粒之间的相互作用可以比带负电荷的颗粒更强。模拟是在两个空间维度上进行的，将离子和电子视为单独的粒子。
英文摘要：
The charging of conducting or alternatively insulating dust grains in a supersonic plasma flow with a directed photon flux is studied by the particle-in-cell method. The electron emission modifies the surface charge distribution on a grain and in the surrounding plasma. The charge and potential distributions on and around a dust grain are studied for different photon fluxes and different angles of the incident unidirectional photons with respect to the plasma flow velocity vector. Continuous and pulsed radiations are considered. We show that photoemission allows controlling the charge on conducting grains, and discuss the charging of stationary and spinning insulating grains. Interactions between positively charged grains can be stronger than for negatively charged grains. The simulations are carried out in two spatial dimensions, treating ions and electrons as individual particles.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
